Fabric-winding device for embroidering-machines.



R. ZAHN.

FABRIC WINDING DEVICE FOR EMBROIDERING MACHINES.

APPLICATION FILED JAN,23, 1913.

Patented Apr. 21, 1914 3 SHEETS-SHEET l.

.Q @www MMV UMBIA PLANDGRAPH co WASHINGTON D c Y R. ZAHN.

FABRIC WINDING DEVICE FOR BMBROIDERING MACHINES.

APPLICATION FILED 11111.23, 1913.

1,093,758. Patented A111221, 1914.

3 SHEETS-SHBBT 2. Y

. I .numlllllll uw u I R. ZAHN.

FABRIC WINDING DEVICE FOR. EMBROIDERING MACHINES APPLIOATION FILED JAN.23,1913.

Patented A101121, 1914 asHEBTs-SHBET s.

ROBERT ZAHN, 0F PLAUEN, GERMANY.

FABRIC-WINDING DEVICE FOR EMBROIDERING-MACHINES.

Specification of Letters Patent.

Patented Apr. 21, 1914.

Application led January 23, 1913. Serial No. 743,844.

To all whom t may concern Be it known that I, ROBERT ZAHN, a subject of the German Emperor, residing at Plauen, in Vogtland, in the Kingdom of Saxony, Germany, have invented certain new and useful Improvements in Fabric- Winding Devices for Embroidering- Machines, of which the following is a specification.

The fabric on which embroidery work is to be produced on embroidering machines must be wound around the fabric rollers eXn tremely taut and without creases in order to obtain a taut embroidering surface. By hand only about 4:15 1n. of fabric could be wound up, and the tautness of the fabric even then is insufficient. The fabric is ordinarily woven in pieces of 1.1? m. and thus about 3 pieces must be sewn together to obtain 43j m. of fabric. It is very important that the seams obtained by the sewing together of the pieces of fabric run parallel to the axis of the fabric roller, and this must be taken care of when the fabric is wound.

It is not only very difficult to wind up the fabric on the fabric rollers which in modern machines is about twenty yards long, when the rollers are mounted in the machines, but to do that the operation of the machine must be discontinued.

The chief object of this invention is to provide a fabric winding machine separate from the embroidering machine, whereby the fabric rollers may in advance be supplied with the fabric so that the same can be readily put into the machine in place of the ones used up.

Another object of my invention is so-to construct the winding machine that the fabric can be wound up extremely taut, without creasing, and so that the seams of the pieces sewn together are parallel to the aXis of the rollers.

A further object of my invention is to provide means whereby the tautness of the fabric can be regulated.

My invention is illustrated in the accompanying drawing, in which- Figure 1 is a section on line 1-1 of Fig. 2; Fig. 2 is an end view; Fig. 3 is a plan view of the machine and Figs. 4-12 illustrate on enlarged scale details of construction.

1 denotes the fabric roller of an embroid ering machine, around which the fabric is adapted to wind. The roller l is removably supported in sockets 19 and 2O by means to be hereinafter fully specified, and bears on a rotary supporting roller 2. The latter is driven from an electromotor 3 by means of a belt 4 and pulleys 5, 5 and transmits its motion to the roller 1, by means of two gears 6, 6 of equal size, so that the roller 1 revolves with the speed of the roller 2. The fabric 7 runs over a smooth inclined guide table 8, thence around a loose, movable and rough roller 9, then over a stationary fabric stretching table 10, and thence to the roller 1 around which it is adapted to wind. The table 10 and roller 9 form together the means for stretching the fabric breadthwise, whereby an undisturbed smooth winding of the fabric around the roller 1 is insured. The table 10 is provided with rough guide members or stretchers 11, which relative to the longitudinal central line of the fabric, are symmetrically distributed thereon and relative to the direction of feed of the fabric are slanting forwardly.

To prevent the bending of the roller 1 in the middle, a movable support 13 formed with rollers 14 is provided on the machine frame and adapted to centrally support the roller 1.

The sockets 19 and 2O are hinged to levers 17 and 18 movably mounted at both ends of the spindle 16 of the roller 2.

At the driving end the journal 21 is removably borne in the socket 20. This journal carries the gear 6 and is formed with a central pivot 22 and a nose 23. The latter is adapted to engage a projection 24 on the fabric roller 1. On the bolt 20 hinging the socket 20 to lever 1S is mounted a gear 25 which meshes with a gear 26 carried by the hinged socket 20 and connects the two gears 6 and 6. Thus the gears 6, 25, 26 and 6 will not get out of meshing connection when the gear 6 moves awayfrom the gear 6.

On the opposite end the roller 1 is supported by the journal 27 removably borne in the socket 19. If the roller 1 is to be removed, the screws 28 Figs. 6-8), whereby the journals 21 and 27 are held in the sockets 19 and 20 respectively, are unscrewed.

The rough roller 9 is provided at both ends with journals 9 which are looselyborne in bifurcated lever arms 92 (Figs. 1 and 2) or in bifurcated arms 93 (Fig. 10). Around the middle portion of the roller an endless strap or band 29 is passed, which is guided over a loose pulley 30 carried on a spindle 31 of a lever The roller 9 is thus capable of a vertical movement parallel to itself and normally is supported by the fabric, which is passing from the guide table S on to the stretching table 10. Its vertical downward movement, however, is limited by the neck portion 8a of the stationary frame which carries the table 8. The rotary motion of the roller 9 is transmitted through the 1nedium of the band 29 to said loose pulley 30. If a braking action is imparted to the loose pulley 30, as by means of the spring brake 32V (Fig. 12), this action will be transmitted to the roller 9, whereby the tension of the fabric to be stretched will be changed. Thus the tension of the fabric can be easily regulated. The braking action can xbe effected at the ends of both pivots 9 or at the pivot 31 of the pulley 30.

What I claim and desire to secure by Letters Patent is:

l. In embroidering` machines, the combination with the fabric roller, of a fabric winding device comprising a smooth guide table, a fabric stretching table, a loose rough roller capable of vertical movement parallel to itself and arranged between said two tables and means for braking said loose roller to regulate the tension of the fabric.

2. In embroidering machines, the combination with the fabric roller, of a fabric winding device comprising a smooth guide table, a fabric stretching table, a loose rough roller between said two tables, a loose pulley, and a band guided over said pulley and which passes around the said loose roller,

Oopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

